Downtube Cable Stops

These components convert your frame's existing downtube shifter bosses into cable stops. This allows you to run modern STI levers or bar-end shifters that require housing to reach the downtube, rather than mounting shifters directly on the frame.

They are designed to fit standard brazed-on downtube shifter bosses found on most steel and aluminum road frames. They will not work on frames that lack these specific mounting points or on frames with non-standard, proprietary shifter mounts.

Installation is straightforward and typically requires only a standard hex key or screwdriver, depending on the bolt head provided. Since the necessary mounting hardware is included in the pack, you won't need to source additional bolts.

Yes, each pack contains two cable stops, which is exactly what you need to convert both the left and right shifter bosses on a standard road frame.

The stops are designed to mount securely over the bosses, but it is always a good idea to ensure the contact area is clean before installation. While they are metal-on-metal, they are standard Shimano components designed to minimize frame abrasion.